Currently, every reply in a task's comment thread requires an explicit mention for Brain to receive and respond to the message. Once a user has mentioned Brain and a conversation is underway within the same thread, subsequent replies should automatically be routed to Brain without requiring repeated mentions.

This would significantly reduce friction in task-based conversations with Brain, especially when multiple back-and-forth exchanges are needed (e.g., refining subtasks, discussing task details, or iterating on content). The context is already established within the thread, so requiring a manual mention each time feels redundant.

Suggested behaviour: After Brain is mentioned once in a comment thread, all subsequent replies within that same thread are automatically delivered to Brain until the user explicitly ends the conversation or a different participant is addressed.